The detectives from the Special Victims Unit and the 27th Precinct probe the gunshot murder of a man believed to be a sexual aggressor but the evidence points to the trouble-prone daughter of a wealthy family whose protective and haughty female clan leader could make trouble for investigators and prosecutors alike. But when another duplicate murder occurs, the cops re-think their primary suspect while Detective Briscoe believes they might have stumbled upon new evidence about a serial killer who eluded him five years earlier.